#51C3EB#51C3EB

#51C3EB is a light, moderate cyan. Relative luminance 0.468; OKLCH L 76.8% C 0.117 H 224.7°. Best body text is #000000 at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#51C3EB
RGB	rgb(81, 195, 235)
HSL	hsl(196, 79%, 62%)
HSV	hsv(196, 66%, 92%)
CMYK	cmyk(65.5%, 17%, 0%, 7.8%)
CIE-LAB	lab(74.04, -20.11, -29.35)
CIE-LCH	lch(74.04, 35.58, 235.58°)
OKLab	oklab(76.8% -0.0828 -0.082)
OKLCH	oklch(76.8% 0.117 224.7)
XYZ	xyz(37.8978, 46.7736, 85.6121)
Luminance	0.4678 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C3EB #EB7951

analogous

#51EBC6 #51C3EB #5176EB

triadic

#51C3EB #EB51C3 #C3EB51

tetradic

#51C3EB #C651EB #EB7951 #76EB51

square

#51C3EB #C651EB #EB7951 #76EB51

split-complementary

#51C3EB #EB5176 #EBC651

monochromatic

#1486AE #1AB0E5 #51C3EB #88D6F1 #BFE9F8

Accessibility & contrast

On white

2.03

#51C3EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.36

#51C3EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C3EB

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C3EB	#FFFFFF	#000000	##000000
##51C3EB	1.00	2.03	10.36	10.36
#FFFFFF	2.03	1.00	21.00	21.00
#000000	10.36	21.00	1.00	1.00
##000000	10.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ADBFED

Deuteranopia (green-blind)

#97AFEB

Tritanopia (blue-blind)

#00CFD0

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #51c3eb;
/* rgb */ color: rgb(81, 195, 235);
/* oklch */ color: oklch(76.8% 0.117 224.7);

Tailwind

colors: {
  custom: {
    50: '#92d5f1',
    500: '#51c3eb',
    950: '#000000',
  },
}

SCSS

$custom: #51c3eb;
$custom-light: #92d5f1;
$custom-dark: #000000;

JSON

{
  "hex": "#51c3eb",
  "rgb": {
    "r": 81,
    "g": 195,
    "b": 235
  },
  "hsl": {
    "h": 195.584,
    "s": 79.381,
    "l": 61.961
  },
  "oklch": {
    "l": 0.76798,
    "c": 0.1165,
    "h": 224.7
  },
  "luminance": 0.46778
}

Semantic roles & 50–950 ramp

primary

#51C3EB

secondary

#E8BEB0

accent

#400ADC

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C3EB

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →